invoice-system
This skill should be used when the user asks about the invoice system (インボイス制度), qualified invoices (適格請求書), registration numbers (登録番号), input tax credits (仕入税額控除), the 20% special measure (2割特例), the 30% special measure (3割特例), tax-exempt businesses (免税事業者), transitional measures (経過措置), small-amo…
Install / Use
npx skills add kazukinagata/shinkoku --skill invoice-systemInstalls into whichever agent you are using.
SKILL.md
Installable skill definition
Quality Score
Category
Finance & AccountingSupported Platforms
Our assessment of invoice-system
invoice-system scores 83/100 on our quality scale, 81st of 115 Finance & Accounting skills we index.
We have not analysed the SKILL.md file itself yet, so the content part of this score is an estimate until our crawler reaches it.
It has 360 GitHub stars, a meaningful sign that others use it.
Maintenance, license and trust
- The repository was last updated 26 days ago, so invoice-system is actively maintained.
- It is released under the MIT license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
invoice-system compared with similar skills
All 4 of these similar skills score higher than invoice-system; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| invoice-system (this skill)by kazukinagata | 83 | 360 | 26d ago | SKILL.md |
| LocalAIby mudler | 100 | 49.4k | today | MCP Server |
| algorithmic-artby anthropics | 100 | 177.9k | 12d ago | SKILL.md |
| pptxby anthropics | 100 | 177.9k | 12d ago | SKILL.md |
| designby nextlevelbuilder | 100 | 130.2k | 13d ago | SKILL.md |
Frequently asked questions
- How do I install invoice-system?
- Run
npx skills add kazukinagata/shinkoku --skill invoice-system. The install tabs above show the steps for each supported agent. - Which AI agents does invoice-system work with?
- It is written for Universal, as a SKILL.md file. Other agents that read the same format can often use it too.
- Is invoice-system safe to use?
- It is MIT-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is invoice-system still maintained?
- The repository was last updated 26 days ago, so invoice-system is actively maintained.
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Languages
Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.